function btnDel() {
    console.log('我是删除');
    axios.delete('http://localhost:3000/users/18', { username: 'admin', passowrd: '113' }).then(res => {
        console.log(res);
    })

}

function btnAdd() {
    console.log('新增');
    location.href='./edit.html'
}
function btnQuery() {
    console.log('查找');
}
function btnEdit() {
    console.log('编辑');
    location.href='./edit.html'
}